Sometimes, over-training is going to Walmart to buy healthy food, but instead end up wandering around with two boxes of Little Debbies, a 2 liter of soda, and a bag of chips, vowing to yourself that you’ll never work out again. Then, calmly putting the items down and leaving empty-handed and not exercising for two months because you can’t make yourself go to the gym.
Over-training can come out of nowhere and over-training can look like something else. Be careful. Take care of yourself.